Positioning:
The Harley-Davidson Dyna series in 2008-2009 represented a significant evolution in the company's cruiser lineup, bridging the gap between the Sportster and the larger Touring models. They were known for their direct-handling characteristics and customizable V-twin engines.
Competitors:
Competed with models from Indian Motorcycle, Victory Motorcycles, and select Japanese cruisers from manufacturers like Yamaha, Kawasaki, and Suzuki.
Engine Type:
Air-cooled V-twin engine
Chassis Design:
Rubber-isolated powertrain for reduced vibration, twin downtubes
Style:
Classic cruiser styling with a focus on a muscular stance
Engine:
Engine disassembly, assembly, troubleshooting, diagnostics, tuning, lubrication, cooling systems
Fuel System:
Fuel injection (EFI), fuel pump, fuel filter, fuel lines, throttle body, sensors
Ignition System:
Ignition module, spark plugs, coils, timing
Transmission:
Clutch, primary drive, gearbox, final drive belt
Electrical System:
Battery, charging system (alternator/stator, regulator/rectifier), starting system, lighting, indicators, horn, wiring diagrams, diagnostic codes
Braking System:
Brake calipers, master cylinders, brake lines, brake pads, rotors, bleeding procedures, ABS (if applicable)
Suspension:
Front forks (telescopic, potentially cartridge type), rear shocks, swingarm, bearings
Wheels Tires:
Wheel bearings, tire inspection and replacement, wheel balancing, spoke tension (if applicable)
Frame Chassis:
Frame inspection, steering head bearings, mounting points
Bodywork Fittings:
Fuel tank, fenders, seat, handlebars, controls, fairings (if equipped), instrumentation
Routine Maintenance:
Oil changes, filter replacement, chain adjustment (if applicable), spark plug replacement, air filter cleaning/replacement, lubrication points
Troubleshooting Diagnostics:
Step-by-step diagnostic charts for common and uncommon problems, DTC (Diagnostic Trouble Code) interpretation
Engine Repair:
Top-end rebuild (cylinder heads, pistons, rings), bottom-end rebuild (crankshaft, bearings), valve adjustment, timing chain/belt service
Transmission Repair:
Clutch adjustment and replacement, gear inspection, bearing replacement, seal replacement
Electrical Repair:
Component testing, wiring harness repair, battery charging system diagnosis
Brake Service:
Brake fluid flush and replacement, caliper rebuild, master cylinder replacement, rotor replacement
Suspension Service:
Fork oil change, seal replacement, shock absorber replacement
Wheel Tire Service:
Tire mounting and dismounting, wheel bearing replacement, balancing
Depth Level:
Comprehensive (suitable for professional technicians and advanced DIY enthusiasts)
Detail Level:
Includes detailed diagrams, torque specifications, special tool requirements, and step-by-step instructions for complex procedures
Engine Family:
Twin Cam 96
Displacement:
1584 cc (96 cubic inches)
Bore X Stroke:
3.75 in. x 4.38 in. (95.25 mm x 111.25 mm)
Horsepower:
Approximately 70-75 HP (at crankshaft, manufacturer claims vary slightly by model)
Torque:
Approximately 90-95 ft-lbs at 3,500 RPM (at crankshaft, manufacturer claims vary slightly by model)
Fuel Delivery:
Electronic Sequential Port Fuel Injection (ESPFI)
Fuel Type:
Unleaded gasoline, minimum 91 octane (RON + MON)/2 rating recommended
Cooling Method:
Air-cooled
Oil Type:
Harley-Davidson SYN3 (Synthetic) SAE 20W50 or equivalent motorcycle-specific oil
Oil Capacity:
Approximately 3.5 US quarts (3.3 Liters) with filter change
Ignition Type:
High-performance, electronic ignition module
Spark Plugs:
Typically Harley-Davidson or Screamin' Eagle iridium plugs (e.g., 6R12A or equivalent)
Type:
6-speed constant mesh, cruise drive transmission
Optional Transmissions:
N/A for factory specifications, aftermarket options available
Primary Drive:
Duplex chain, compensator sprocket, clutch, oil bath
Transmission Oil Type:
Harley-Davidson Formula+ Transmission and Primary Chaincase Lubricant (or equivalent)
Transmission Oil Capacity:
Approximately 1 US quart (0.95 Liters)
Length:
Varies by specific Dyna model (e.g., Fat Bob, Street Bob, Super Glide, Low Rider) - typically around 90-93 inches
Width:
Varies by specific Dyna model - typically around 34-36 inches
Height:
Varies by specific Dyna model - typically around 45-48 inches
Dry Weight:
Varies by specific Dyna model - typically around 640-670 lbs (290-304 kg)
Gross Vehicle Weight Rating Gvwr:
Typically around 1000-1050 lbs (454-476 kg)
Fuel Tank Capacity:
Typically 5.0 US gallons (18.9 Liters)
Instrumentation:
Analog speedometer, tachometer, fuel gauge, voltage meter, oil pressure indicator, turn signal indicators, hazard warning, engine diagnostics (MIL).
ABS:
Optional Anti-lock Braking System (ABS) available on some models.
Diagnostic System:
On-board diagnostics (OBD-II compatible for emissions and fault codes) with Harley-Davidson specific diagnostic connectors and tools.
Security:
Factory-installed H-D Smart Security System with proximity-based disarming (key fob).
First Service:
1,000 miles (1,600 km) or 6 months
Subsequent Services:
Every 5,000 miles (8,000 km) or 12 months thereafter (includes oil change, filter, inspection of various components)
Major Overhaul Intervals:
Not specified in typical service intervals; based on inspection and component wear.
Engine Oil:
Harley-Davidson SYN3 (Synthetic) SAE 20W50 or equivalent
Transmission Primary Oil:
Harley-Davidson Formula+ Transmission and Primary Chaincase Lubricant or equivalent
Brake Fluid:
DOT 4 brake fluid (non-silicone based)
Fork Oil:
Harley-Davidson Type E (5W) or Type HD 10W (depending on front end configuration and preference) - specified in manual
Cam Chain Tensioner:
Early Twin Cam engines (pre-2007) had plastic cam chain tensioners prone to wear; 2007+ models have updated hydraulic tensioners, but monitoring is still advised.
Crankshaft Runout:
While improved over earlier Twin Cams, checking crankshaft runout during engine work is a critical procedure detailed in the manual.
Regulator Rectifier:
Can be a failure point due to heat; proper ventilation and inspection are key.
Vibration:
While rubber-mounted, some vibration is inherent. Proper maintenance of mounts and balance helps.
Heritage:
Harley-Davidson, founded in 1903, is an iconic American motorcycle manufacturer with a rich history in creating cruisers, touring bikes, and performance motorcycles.
Dyan Lineage:
The Dyna line, introduced in 1991, evolved from the FXR platform, offering a blend of performance and traditional Harley-Davidson styling. The Twin Cam 88 was replaced by the Twin Cam 96 in 2007, leading to the models covered by this manual.
Manufacturing Location:
Harley-Davidson motorcycles for this era were primarily manufactured in the United States, with assembly plants in York, Pennsylvania, and Milwaukee, Wisconsin.
